I found out Joe Joyce left him too. In an interview he said that training camp was primarily based around lifting, strength & conditioning, and increasing punching power.Looking back when it's all said and done, Golovkin is going to have a huge "what if" career. Abel said a lot of stuff and ultimately a lot of hate or criticism towards GGG is directly attributed to Abel and the things he's said/done and the fights that didn't seem to happen, partly, at least, because of him. And Sanchez didn't necessarily "ruin" Gennady, but I think as his career has played out, for those that have watched him for so long and saw how he was before Abel, his style was overly emphasized on power and aggression, when he could've been fine tuned into a much more effective boxer-puncher. His power was always going to be there no matter what, that much was evident early on in his career. A better approach would have been to work on counter-punching/slipping punches, which is something Golovkin was actually fairly good at. The whole "we don't adjust to our opponents, they adjust to us" and "we don't study tape" is and was always bullshit. I never understood why you wouldn't want to find every weakness/tendency your opponent has and build a game plan around that. All Golovkin needed was a competent promoter and a move to the states and he was going to be a star. Sanchez just so happened to have him essentially fall in his lap. And Abel getting upset at Gennady for not following his "plan" in the second fight is misplaced too. If it wasn't for Gennady boxing the way he did in the 2nd half of the fight, he wouldn't have turned things around the way he did. All in all, it's probably for the better that Golovkin left him. Quite a few guys have left him over the years and enough of his fighters, as of late, have looked rather amateur and rudimentary. Might have been wise to pick up the cues the past several years. And also, just for the sake of it, the notion that Golovkin threw only 6 body shots in the second fight isn't true. There might be more but I've counted at least 11 and that's not even watching the whole fight over again.
I can't recall Golovkin fighting on the back foot against Canelo, but 99% of elite fighters can and should whether they are too short or tall for the weight class. Canelo is the more sophisticated fighter and won the rematch from what I remember.
It's in GGG's best interest to start countering and boxing because just coming forward will lead to another loss and him getting TKO'd. For example, Felix Trinidad lost to Hopkins, but never evolved and lost big against Wright and Jones.